Bearing for impellers



Jan. 12, 1932. L. G. L. THOMAS BEARING FOR IMPELLERS Filed April 25, 1929 v51 41:; Laaqalsf tlfijkomas.

Patented Jan. 12, 1932 LOUIS e. L. THOMAS, orcnrcne'o,

BEARING FOR ims o. :7

[A lication filed April 25,

This invention relates to a journal for impellers. V 1

In the past, more or less difiiculty has been encountered in centrifugal pumps, especially of the sump type, due to the fact that the im: pellers thereof have, been provided with an integral bearing shaft. After a certain amount of usage,this shaft would wear causing the impeller to wobblev and rotate-in an irregular path. Of course, when this was discovered, it was'necessary to discard the impeller and replace the same by a new one. The replacementof impellers due to the worn out character of their shafts involved an expensive procedure, and it is an object of .this invention to avoid this constant replac ing of impellers that are substantially in good order with the exception otthe worn character of the supporting shaft thereof.v

'20 To this end, the impeller is provided with a removable journal which may be replaced when worn out without having to discard th impeller as in the past.

. The invention comprises the novel structure and combination of parts hereinafter described and more particularly pointed out and defined in the appended claims. f

In the accompanying drawing, which il- 7 illustrates a preferred form of this invention, 00 the figure 1s a vertical sectlonal v1ew through a sump pump having an impeller involving this invention.

In the drawing, there is illustrated a sump pump having an impeller provided with an integral bearing neck or shaft 2 upon which a removable journal 3 is secured. It will be noted that the journal 3 is providedwith a cylindrical socket in one end for receiving the bearing'neck 2. The bearing neck 2 and 7 40 the removable journal 3 are provided'withbores for receiving the lower end of a spindle 4. The lower end of the spindle 4 is provided with a nut' 5 that engages in a recess in the impeller l, and this end of the spindle j 5 4 is suitably keyed to the neck 2 and journal 3 by means of a key 6. The spindle extends T upwardly through suitable'bearingsY and 8,. and connects with a fiexible'coupling 9 atits upper end. The flexible coupling'9'is adaptv ed to be driven by some source of power such or any other suitable material.

1925; Serial inc. 358,6 6; N

as a not 7 Thebearings'a l iand, 8 are a part of a housingkenclosin-gi the "spi-n dle l, but as this structure is old iandawell known,- t need not," befurther described. if

The .Iaforementioned' removable journal 3 is mounted Ior rotation within a cylindrical bushing 10, which may b'eff'of brass or bronze 10 is mounted in a cylindrical bearing aperture formed in a bearing housing 11 which is flanged at its lower end and forms a part of the impeller casing. The bottom of the lmpeller'casing is formed by a removable plate '12. Itcmight be'mentionedthat the bearing housing 11 is a part of. the main bearing housing for the spindle 4.

I 7 will be obvious that according'to 'this invention, thewear arising from the rotation of the lmpeller on the journal 3 is not serione since the. same may be removed and recomplished'by removing the plate 12 and disconnecting the impeller from the spindle 4:. The bushing 3 may then be removed from The bushing 7of placed at any time without the'necessity for i d scard ng the impeller 1,. This may be acits bearing togetherwith the impeller if desirable, or they may be separately removed.

A new journal may then be placed upon the neck 2 of the impeller and the parts may be reassembled.

V I am aware that'many changes may be made andnumerous details of construction may be varied through a wide range with.- out departing from the principles of this invent1on and I, therefore, do not purpose limiting the patent granted thereon, otherwise 7 than necessitated by the prior art. 'I-claim as my invention: v1. The combination with a rotary impeller.

having an integral bearing neck, a "journal having a socket inone end forremovab-ly re ceiving said bearingneck, and a' bearing houslng. .1n 7 which said journal; member is journalled' for rotation. V .2. Th'e combination with an impeller having a laterally projectingjneck, a journal member having a socket in one end for're ceivingsaidjneck, a bearing housing in which said memberqis rotatably mounted; and a r spindle extending through said bearing mem her and neck for rotating said impeller.

3. The combination with a vertical housing, a vertical spindle in said housing, an impeller secured to the end of said spindle, said impeller having a bearing neck through which said spindle passes, a removable journal having a socket for receiving said bearing neck, and a bushin in said housing in which said journal member is j ournalled.

4. The combination with a verticalhousing having a cylindrical bearing at its lower end, a bushing in said bearing, a removable journal member in said bushing provided with a socket, an impeller having a neck engaging said socket and a vertical spindle extending through saidhousing and secured to said impeller. I

In testimony whereof I have hereunto subscribed my name at Chicago, Cook County,

Illinois.

LOUIS G. L. THOMAS. 

